题目内容
专家建议青少年每周至少应该锻炼5次,每次至少30分钟。
Experts suggest that teenagers (1) (2) (3) 30 minutes (4) , five times a week.
spend at least; exercising
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题目内容
专家建议青少年每周至少应该锻炼5次,每次至少30分钟。
Experts suggest that teenagers (1) (2) (3) 30 minutes (4) , five times a week.
spend at least; exercising